Home / 715,541.73-986,407.11-500,012.88

Finding the Fourth Proportional to 715,541.73, 986,407.11 and 500,012.88

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Solution

The fourth proportional to 715,541.73, 986,407.11 and 500,012.88 is: 689,290.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,541.73 : 986,407.11 = 500,012.88 : x
  2. Step 2: Convert to fraction form
    715,541.73/986,407.11 = 500,012.88/x
  3. Step 3: Cross multiply
    715,541.73x = 986,407.11 × 500,012.88
  4. Step 4: Simplify right side
    715,541.73x = 493,216,259,923.58
  5. Step 5: Solve for x
    x = 493,216,259,923.58/715,541.73
  6. Step 6: Final answer
    x = 689,290.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.